"use strict";

import { some } from "min-dash";

// const some = some
// const some = require('min-dash').some

const ALLOWED_TYPES = {
	FailedJobRetryTimeCycle: ["bpmn:StartEvent", "bpmn:BoundaryEvent", "bpmn:IntermediateCatchEvent", "bpmn:Activity"],
	Connector: ["bpmn:EndEvent", "bpmn:IntermediateThrowEvent"],
	Field: ["bpmn:EndEvent", "bpmn:IntermediateThrowEvent"]
};

function is(element, type) {
	return element && typeof element.$instanceOf === "function" && element.$instanceOf(type);
}

function exists(element) {
	return element && element.length;
}

function includesType(collection, type) {
	return (
		exists(collection) &&
		some(collection, function (element) {
			return is(element, type);
		})
	);
}

function anyType(element, types) {
	return some(types, function (type) {
		return is(element, type);
	});
}

function isAllowed(propName, propDescriptor, newElement) {
	const name = propDescriptor.name,
		types = ALLOWED_TYPES[name.replace(/flowable:/, "")];

	return name === propName && anyType(newElement, types);
}

function FlowableModdleExtension(eventBus) {
	eventBus.on(
		"property.clone",
		function (context) {
			const newElement = context.newElement,
				propDescriptor = context.propertyDescriptor;

			this.canCloneProperty(newElement, propDescriptor);
		},
		this
	);
}

FlowableModdleExtension.$inject = ["eventBus"];

FlowableModdleExtension.prototype.canCloneProperty = function (newElement, propDescriptor) {
	if (isAllowed("flowable:FailedJobRetryTimeCycle", propDescriptor, newElement)) {
		return (
			includesType(newElement.eventDefinitions, "bpmn:TimerEventDefinition") ||
			includesType(newElement.eventDefinitions, "bpmn:SignalEventDefinition") ||
			is(newElement.loopCharacteristics, "bpmn:MultiInstanceLoopCharacteristics")
		);
	}

	if (isAllowed("flowable:Connector", propDescriptor, newElement)) {
		return includesType(newElement.eventDefinitions, "bpmn:MessageEventDefinition");
	}

	if (isAllowed("flowable:Field", propDescriptor, newElement)) {
		return includesType(newElement.eventDefinitions, "bpmn:MessageEventDefinition");
	}
};

// module.exports = FlowableModdleExtension;
export default FlowableModdleExtension;
